Na<sub>4</sub>MgM<sub>2</sub>Se<sub>6</sub> (M = Si, Ge): The First Noncentrosymmetric Compounds with Special Ethane-like [M<sub>2</sub>Se<sub>6</sub>]<sup>6–</sup> Units Exhibiting Large Laser-Damage Thresholds
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Two new noncentrosymmetric compounds, Na4MgM2Se6 (I, M = Si; II, M = Ge), that contain special ethane-like [M2Se6]6– units were reported for the first time. Remarkably, they exhibit high laser-damage thresholds [9 (I) and 7 (II) × benchmark AgGaS2] and moderate second-harmonic-generation responses with type I phase matching.
创建时间：
2016-02-12
